Can adjust the VAT value of items in case of using the VAT is not the same in each customer and associate information to charge VAT from the customer's information.
You can adjust your VAT items, in which case the VAT is not applied equally to each customer. And linked to the VAT from the customer information automatically.
Can adjust the VAT of items in the case of the use of VAT unequal to each customer and links the information thinking VAT products from customer data automatically.